package org.example.api;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/logout")
public class LogoutServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //注销功能（博客列表页面，博客详情页面，写博客页面）
        //如果存在session，就让session失效
        HttpSession session = req.getSession(false);
        if(session != null){
            session.invalidate();
        }
        //重定向到登录页面
        resp.sendRedirect("login.html");
    }
}